Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, China.
Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin, China.
Arch Environ Contam Toxicol. 2020 Jul;79(1):1-11. doi: 10.1007/s00244-020-00736-9. Epub 2020 Apr 19.
Guilin, a famous tourist city, is located in northeast Guangxi Province of Southwest China. However, recently, abnormal haze events occurred frequently in the winter. To characterize inorganic elements in PM and associated sources during a winter haze episode, 30 samples were collected from 6 sites in Guilin from December 16 to 20, 2016, and 24 inorganic elements were measured using an inductively coupled plasma mass spectrometer. The results showed that the sum of 24 inorganic elements varied from 5.47 ± 0.45 to 9.26 ± 0.73 μg m, and accounting for 6.81% ± 13.35% to 8.63% ± 15.05% of PM at all sites. Among them, crustal elements, including K, Ca, Na, Mg, Al, Fe, and Ti contributed approximately 82% ± 6%-90% ± 3%. Cluster results combined the coefficient of divergence and hierarchical cluster for inorganic elements and the sites showed that YS designated as the background site had obvious spatial heterogeneity, specially, mass concentration, and I (index of geoaccumulation) values of Ni, Cr, Mo, and Ba were higher than those at the other five sites, which indicating that PM in Guilin was significantly affected by interregional transport. The results of source apportionment showed that Al, Ti, B, Fe, Ca, Mg, and Cr were derived from road and building dust, whereas Sb, As, and Hg originated from coal combustion, Co and V from vehicle emission (such as diesel and gasoline combustion), and other metals (Zn, Pb, Mn, Ba, Cu, Ni, Se, Cd, Mo, Tl, K, and Na) from coal combustion and industrial processes.
桂林，一座著名的旅游城市，位于中国西南部广西省东北部。然而，最近，这个冬季频繁出现异常雾霾事件。为了描述冬季雾霾事件期间 PM 中无机元素的特征及其来源，于 2016 年 12 月 16 日至 20 日在桂林的 6 个地点采集了 30 个样本，并使用电感耦合等离子体质谱仪测量了 24 种无机元素。结果表明，24 种无机元素的总和在 5.47±0.45 到 9.26±0.73μg/m 之间，占所有站点 PM 的 6.81%±13.35%到 8.63%±15.05%。其中，地壳元素，包括 K、Ca、Na、Mg、Al、Fe 和 Ti，约占 82%±6%-90%±3%。无机元素和站点的聚类结果结合了散度系数和层次聚类，结果表明 YS 被指定为背景站点，具有明显的空间异质性，特别是 Ni、Cr、Mo 和 Ba 的质量浓度和 I（地质累积指数）值高于其他五个站点，表明桂林的 PM 受到明显的区域间传输的影响。源分配的结果表明，Al、Ti、B、Fe、Ca、Mg 和 Cr 来源于道路和建筑灰尘，而 Sb、As 和 Hg 来源于煤炭燃烧，Co 和 V 来源于车辆排放（如柴油和汽油燃烧），其他金属（Zn、Pb、Mn、Ba、Cu、Ni、Se、Cd、Mo、Tl、K 和 Na）来源于煤炭燃烧和工业过程。
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